Q376
Errorless
7. NCERT(Exemplar Questions)
MCQ
Evolution of life shows that life forms had a trend of moving from
A.
Land to water
B.
Dryland to wet land
C.
Fresh water to sea water
D.
Water to land
Q377
Errorless
7. NCERT(Exemplar Questions)
MCQ
Viviparity is considered to be more evolved because
A.
The young ones are left on their own
B.
The young ones are protected by a thick shell
C.
The young ones are protected inside the mother's body and are looked after they are born leading to more chances of survival
D.
The embryo takes a long time to develop
Q378
Errorless
7. NCERT(Exemplar Questions)
MCQ
Fossils are generally found in
A.
Sedimentary rocks
B.
Igneous rocks
C.
Metamorphic rocks
D.
Any type of rock
Q379
Errorless
7. NCERT(Exemplar Questions)
MCQ
For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3 respectively. The expected frequency of MN-blood group bearing organisms is likely to be [NCERT]
A.
42%
B.
49%
C.
9%
D.
58%
Q380
Errorless
7. NCERT(Exemplar Questions)
MCQ
Which type of selection explains industrial melanism observed in moth, Biston bitularia [NCERT]
A.
Stabilising
B.
Directional
C.
Disruptive
D.
Artificial
Q381
Errorless
7. NCERT(Exemplar Questions)
MCQ
Which of the following is an example for link species [NCERT]
A.
Lobe fish
B.
Dodo bird
C.
Sea weed
D.
Chimpanzee
Q382
Errorless
7. NCERT(Exemplar Questions)
Numerical
Match the scientists listed under column 'I' with ideas listed Column 'II'
| Column-I | Column-II | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
Correct Answer: B
Explanation:
B
Q383
Errorless
8. Critical Thinking
MCQ
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements
(A) Wings of butterfly and birds look alike and are the results of\_(i), evolution.
(B) Miller showed that CH4, H2 , NH3 and \_(i), when exposed to electric discharge in a flask resulted in formation of(ii)
(C) Vermiform appendix is a (i)\_organ and an (ii)\_evidence of evolution.
(D) According to Darwin evolution took place due to (i) \_and\_(ii)\_ of the fittest.
(A) Wings of butterfly and birds look alike and are the results of\_(i), evolution.
(B) Miller showed that CH4, H2 , NH3 and \_(i), when exposed to electric discharge in a flask resulted in formation of(ii)
(C) Vermiform appendix is a (i)\_organ and an (ii)\_evidence of evolution.
(D) According to Darwin evolution took place due to (i) \_and\_(ii)\_ of the fittest.
A.
(D) ā (i) Small variations, (ii) Survival (A) ā (i) Convergent
B.
(A) ā (i) Convergent, (B) ā (i) Oxygen, (ii) nucleosides
C.
(B) ā (i) Water vapour, (ii) Amino acids (C) ā (i) Rudimentary, (ii) Anatomical
D.
(C) ā (i) Vestigial, (ii) Anatomical (D) ā (i) Mutations, (ii) Multiplication
Q384
Errorless
8. Critical Thinking
MCQ
Animals living in colder region have shorter tail and ears as compared to the animals living in warmer regions. This phenomenon is called
A.
Bergman's law
B.
Glober's law
C.
Allen's law
D.
Jordan's law
Q385
Errorless
8. Critical Thinking
MCQ
Present day mammals have their predecessor in
A.
Therapsids
B.
Diapsids
C.
Synapsids
D.
Anapsids
Q386
Errorless
8. Critical Thinking
MCQ
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution
A.
Variations, natural selection, overproduction, constancy of population size
B.
Overproduction, variations, constancy of population size, natural'selection
C.
Variations, constancy of population size, overproduction, natural selection
D.
Overproduction, constancy of population size, variations, natural selection
Q387
Errorless
8. Critical Thinking
MCQ
Select the correct match
A.
Gibbon ā Cercopithecoidea
B.
Lemur ā Prosimii
C.
New world monkey ā Hominoidea
D.
Tarsier - Anthropoidea
Q388
Errorless
8. Critical Thinking
MCQ
Match the evolution concepts and their proposers and select the right option Column I With Column-II
| Column-I | Column-II | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
A-R, B-S, C-P, D-Q
B.
A-S, B-R, C-Q, D-P
C.
A-S, B-Q, C-R, D-P
D.
A-Q, B-R, C-P, D-S
E.
A-P, B-S, C-R, D-Q
Q389
Errorless
8. Critical Thinking
MCQ
Following diagrammatic representation refers the natural selection on different traits. Choose the right option in which all the three graphs A, B and C are identified correctly
A.
A - Directional, B - Disruptive, C - Stabilising
B.
A - Stabilising, B - Disruptive, C - Directional
C.
A - Stabilising, B - Directional, C - Disruptive
D.
A - Directional, B - Stabilising, C - Disruptive
Q390
Errorless
8. Critical Thinking
MCQ
The diversity within the wild bird species in the given figure can best be explained by which process
A.
Natural selection
B.
Adaptive radiation
C.
Ecological succession
D.
Both a and b
Q391
Errorless
8. Critical Thinking
MCQ
Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent) '
(A) Homo habilis
(B) Homo sapiens
(C) Homo neanderthalensis
(D) Homo erectus
(A) Homo habilis
(B) Homo sapiens
(C) Homo neanderthalensis
(D) Homo erectus
A.
D-A-C-B
B.
B-A-D-C
C.
C-B-D-A
D.
A-D-C-B
Q392
Errorless
8. Critical Thinking
MCQ
Match Column-I with Column-II
| Column-I | Column-II | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
A.
A-Q, B-P, C-R, D-S
B.
A-R, B-P, C-Q, D-S
C.
A-P, B-Q, C-S, D-R
D.
A-R, B-P, C-S, D-Q
Q393
Errorless
9. Self Evaluation Test
MCQ
When two related populations occupy geographically or spatially separate areas, they are called
A.
Allopatric population
B.
Saltational population
C.
Quantum population
D.
Parapatric population
E.
Sympatric population
Q394
Errorless
10. Assertion and Reason
MCQ
Assertion : Ginkgo biloba is a living fossil.
Reason: Organism which have persisted and remain unchanged for the past several million years while their relative disappeared.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q395
Errorless
10. Assertion and Reason
MCQ
Assertion: Leaf butterfly and stick insect show mimicry to dodge their enemies.
Reason: Mimicry is a method to acquire body colour blinding with the surroundings.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q396
Errorless
10. Assertion and Reason
MCQ
Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits.
Reason: Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q397
Errorless
10. Assertion and Reason
MCQ
Assertion : Homologous organs have common ancestry and similar function.
Reason: Analogous organs have unlike origin and dissimilar function.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q398
Errorless
10. Assertion and Reason
MCQ
Assertion : All primates have a common ancestry.
Reason: The most primate was shrew like animals.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q399
Errorless
10. Assertion and Reason
MCQ
Assertion : Dryopithecus africans is a common ancestor of man and great apes.
Reason: It gave rise to Ramapithecus.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.
Q400
Errorless
10. Assertion and Reason
MCQ
Assertion : Formation of new species is called speciation.
Reason: The deme has a common gene pool.
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.